Service

Backflow Testing & Repair in San Antonio

Certified testing and repair for backflow prevention assemblies.

Texas requires annual testing of backflow prevention assemblies on irrigation systems connected to a public water supply. We test, complete the paperwork, submit it to your water authority, and repair or rebuild assemblies that fail.

Signs you need this service

  • Annual test notice from your city or water utility
  • Water weeping from the relief port
  • Assembly froze during a hard winter
  • You just bought the home and have no test record

How we handle it

  1. 1 Certified test with calibrated gauge
  2. 2 Rebuild check valves and relief valves if the test fails
  3. 3 Retest and document the result
  4. 4 File the report with your local water authority

Where we handle this most

Backflow Testing & Repair in Fair Oaks Ranch Annual tests for SAWS and local water utilities are a regular stop here. Backflow Testing & Repair in Schertz Annual tests for SAWS and local water utilities are a regular stop here. Backflow Testing & Repair in New Braunfels Annual tests for SAWS and local water utilities are a regular stop here. Backflow Testing & Repair in Universal City Annual tests for SAWS and local water utilities are a regular stop here. Backflow Testing & Repair in Leon Valley Annual tests for SAWS and local water utilities are a regular stop here. Backflow Testing & Repair in Castle Hills Annual tests for SAWS and local water utilities are a regular stop here.

Available across the San Antonio region

We provide backflow testing & repair throughout San Antonio and the surrounding communities, including San Antonio, Stone Oak, Alamo Ranch, Helotes, Boerne, Fair Oaks Ranch, Schertz, Cibolo, New Braunfels, Live Oak, and more.

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Guides about Backflow Testing & Repair

August 10, 2025

Backflow Testing Rules San Antonio Homeowners Should Know

Backflow Testing Rules San Antonio Homeowners Should Know — field notes from Sprinkler Repair Tech techs who work Helotes every week.

November 5, 2025

Freeze-Damaged Backflow Assemblies on Texas Homes

Freeze-Damaged Backflow Assemblies on Texas Homes — field notes from Sprinkler Repair Tech techs who work Medical Center every week.

November 8, 2025

RPZ vs Double-Check Backflow Assemblies for Irrigation

RPZ vs Double-Check Backflow Assemblies for Irrigation — field notes from Sprinkler Repair Tech techs who work Southtown every week.

What customers say about our work

5 average from 12 customer reviews
“They found a bad solenoid in under twenty minutes and had the zone running before lunch.”
Marcus T. San Antonio, TX · Sprinkler System Repair · January 5, 2026
“Three heads were buried under clay. They reset everything and the brown patch greened up within a week.”
Elena R. Stone Oak, TX · Sprinkler Head Replacement · January 19, 2026
“A zone would not shut off overnight. They rebuilt the valve, checked the manifold, and it held pressure.”
James K. Alamo Ranch, TX · Valve Repair & Replacement · February 2, 2026

Need backflow testing & repair?

Talk to a San Antonio-based technician about what your system is doing — we diagnose before we dig.

(210) 899-3100